ADE Error Getting License: E_ADEPT_UNKNOWN

I'm having the same issue. It was working perfectly yesterday and then when I had two new NetGalley acsm files, I got the E_ADEPT_UNKNOWN error. I've tried uninstalling and reinstalling ADE 4.5 and I've tried erasing authorization and re-authorizing it. I've also tried older versions of ADE and am still getting an error. This is extremely frustrating and based on a search of the forum, it appears that I'm not the only one experiencing problems. Does anyone out there have any idea if there's an available fix? Thank you in advance!